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Biogas can be produced from organic material (manure, plant waste, organic waste) using bacteria. Biogas is a mixture of methane and carbon dioxide; burning methane produces energy.
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The first member in the homologous series of alkanes.
Bacteria are unicellular organisms that have no nuclei and are a few micrometres in length.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.
Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of the Earth into electricity.
A geyser is a spring characterised by intermittent discharge of water and steam.
This animation demonstrates the structure and operation of impulse turbines.
This animation demonstrates how solar energy can be utilised.
The huge dam built on the Colorado river in the US was named after a former American President.
This physicist-inventor and electrical engineer who mainly dealt with electrotechnics was undoubtedly one of the most brilliant figures of the second...
Nuclear power plants convert the energy released during nuclear fission into electric power.
Solar power stations convert solar energy into electricity.
System that satisfies consumers’ demands of water supply, wastewater disposal, electricity, heat and gas supply and telecommunication.
Thermal power stations convert energy released during the combustion of fossil fuels or renewable resources into electricity.
Tidal power stations utilise the daily fluctuation of the water level for producing electricity.
The structure and density of farms and villages depend on the geographical features of the region.
A transformer is a device used for converting the voltage of electric current.
Wind power stations convert the kinetic energy of the wind into electricity.
Machines converting the energy of wind into useful forms of power were already in use in the Middle Ages.
Pollution is the detrimental effect of human activity on the natural environment.
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.